Sanyo DC-PT70 - IC Block Diagram: IC131 DRAM and IC231

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IC131 M11L416256SA-35T(256k x 16 DRAM)
PIN DESCRIPTIONS
PIN NO. PIN NAME TYPE DESCRIPTION
16~19,22~26 A0~A8 Input
Address Input
Row Address : A0~A8
Column Address : A0~A
8
14
RAS
Input Row Address Strobe
28
CASH
Input Column Address Strobe / Upper Byte Control
29
CASL
Input Column Address Strobe / Lower Byte Control
13
WE
Input Write Enable
27
OE
Input Output Enable
2~5,7~10,31~34,36~39 I/O0 ~ I/O15 Input / Output Data Input / Out
put
1,6,20 V
CC
Supply Power, 3.3V
21,35,40 V
SS
Ground Ground
11,12,15,30 NC - No Conne
ct
CONTROL
LOGIC
DATA-IN BUFFER
CLOCK
GENERATOR
DATA-OUT
BUFFER
COLUMN
ADDRESS
BUFFER
REFRESH
CONTROLER
REFRESH
COUNTER
ROW.
AD DR ESS
BUFFERS(9)
9
A0
A1
A2
A3
A4
A5
A6
A7
COLUMN
DECODE
R
OE
16
ROW DECODE
R
512 x 512 x 16
MEMORY
ARRAY
16
SENSE AMPLIFIERS
I/O GATING
8
512 x 16
V
CC
V
SS
IO0
:
IO15
RA
S
CAS
H
512
512
9
9
9
9
9
CAS
L
V
BB
GENERATOR
WE
16
A8
IC BLOCK DIAGRAM & DESCRIPTION
IC231 LA1844ML(AM/FM-ZF/MPX)
FM
IF
FM
DET
LEVEL
DET
S-CURVE
AM/FM
IF
BUFF
REG
GND
COMP
TUNING
DRIVE
AM
IF
AM
DET
VCC
AGC
PILOT
CANCEL
PILOT
DET
DECODER
ANTI-BIRDIE
STEREO
SW
FF
38k
FF
19k
VCO
304kHz
AM
RF.AMP
AM
MIX
AM
OSC
ALC
BUFF
P-DET
FF
19k
2
1
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